Toothbrush



FIG. 1 is a front perspective view from above and one side;

FIG. 2 is a front view;

FIG. 3 is a rear view;

FIG. 4 is a side view;

FIG. 5 is the other side view;

FIG. 6 is a plan view; and,

FIG. 7 is an underneath plan view. 

I claim the ornamental design for a toothbrush, as shown and described. 